A standard insurance policy issued to business organizations to protect them against liability claims for bodily injury (BI) and property damage (PD) arising out of premises, operations, products, and completed operations; and advertising and personal injury (PI) liability. The CGL policy was introduced in 1986 and replaced the "comprehensive" general liability policy.  

claims-made

A type of coverage trigger that obligates an insurer to defend and/or pay a claim on an insured's behalf, if the claim is first made against the insured during the period in which the policy is in force. (The term "made" means notification to an insured that a demand for money or services is being requested.)
For example, assume that a policy containing a claims-made coverage trigger is written with a term of January 1, 2015-2016. Coverage will apply to claims made against the insured during this time period.
Claims-made coverage is in contrast to policies written with an occurrence trigger, whereby coverage applies to incidents occurring while the policy is in force—regardless of when the claim arising out of that incident is made against the insured. Thus, under an occurrence policy with a term of January 1, 2015-2016, coverage would apply to claims arising from incidents that occurred during the January 1, 2015-2016, period, irrespective of when the claims are made against the insured or reported to the insurer.
Although claims-made policies are most often used to write professional and directors and officers liability policy forms, they are occasionally found in commercial general liability (CGL) policies

occurrence policy

A policy covering claims that arise out of damage or injury that took place during the policy period, regardless of when claims are made. Most commercial general liability (CGL) insurance is written on an occurrence form.